<template>
    <div>
        <!-- 面包屑导航区域 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 卡片视图区域 -->
        <el-card>
            <!-- layout布局 -->
            <el-row :gutter="20">
                <el-col :span="7">
                <!-- 搜索与添加区域 -->
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                        <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                        <el-button type="primary" @click="addDialogVisible=true">添加用户</el-button>
                </el-col>
            </el-row>
            <!-- 用户列表区域 -->
            <el-table :data="userList" border stripe>
              <el-table-column label="#" type="index"></el-table-column>  
              <el-table-column label="姓名" prop="username"></el-table-column>
              <el-table-column label="邮箱" prop="email"></el-table-column>
              <el-table-column label="电话" prop="mobile"></el-table-column>
              <el-table-column label="角色" prop="role_name"></el-table-column>
              <el-table-column label="状态">
                    <template slot-scope="scope">
                        <!-- 作用域插槽{{scope.row.mg_state}} -->
                        <!-- 开关按钮 -->
                        <el-switch
                            v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
                        </el-switch>
                    </template>
              </el-table-column>
              <el-table-column label="操作">
                    <!-- 作用域插槽-->
                    <template slot-scope="scope">
                        <!-- 修改按钮 -->
                        <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                        <!-- 删除按钮 -->
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                        <!-- 分配角色 -->                      
                        <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                            <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                        </el-tooltip>
                    </template>
              </el-table-column>
            </el-table>
            <!-- 分页器区域 -->
            <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum"
                :page-sizes="[1, 2, 5, 10]"
                :page-size="queryInfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total">
            </el-pagination>
        </el-card>
        <!-- 弹出的添加用户对话框 -->
        <el-dialog
        title="添加用户"
            :visible.sync="addDialogVisible"
            width="50%" @close="addDialogClosed">
            <!-- 内容主体区域 -->
            <el-form ref="addFormRef" :model="addForm" :rules="addFormRules" label-width="70px">
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="addForm.username"></el-input>
                </el-form-item>                        
                <el-form-item label="密码" prop="password">
                    <el-input v-model="addForm.password"></el-input>
                </el-form-item>             
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="addForm.email"></el-input>
                </el-form-item>                        
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="addForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <!-- 底部按钮区域 -->
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addUser">确 定</el-button>
            </span>
        </el-dialog>
        <!-- 修改用户对话框 -->
        <el-dialog title="修改用户信息" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
            <el-form :model="editForm" ref="editFormRef" :rules="editFormRules" label-width="70px">
                <el-form-item label="用户名">
                    <el-input v-model="editForm.username" disabled></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="editForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机号" prop="mobile">
                    <el-input v-model="editForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <!-- 底部按钮区域 -->
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUserInfo">确 定</el-button>
            </span>
        </el-dialog>
        <!-- 分配角色的对话框 -->
        <el-dialog
            title="分配角色"
            :visible.sync="setRoleDialogVisible"
            width="50%" @close="setRoleDialogClosed">
            <div>
                <el-form>
                    <el-form-item label="当前的用户:">
                        {{userinfo.username}}
                    </el-form-item>
                    <el-form-item label="当前的角色:">
                        {{userinfo.role_name}}
                    </el-form-item>
                    <el-form-item label="分配新角色:">
                        <el-select v-model="selectedRoleId" placeholder="请选择">
                            <el-option
                            v-for="item in rolesList"
                            :key="item.id"
                            :label="item.roleName"
                            :value="item.id">
                            </el-option>
                        </el-select>
                    </el-form-item>
                </el-form>
            </div>
            <span slot="footer" class="dialog-footer">
                <el-button @click="setRoleDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
            </span>
        </el-dialog>
    </div>
</template>

<script>
export default {
    data() {
        //邮箱的验证规则
        var checkEmail=(rule,value,cb)=>{
            //验证邮箱的正则表达式
            const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
            if(regEmail.test(value)){
                //数据合法
                return cb()
            }else{
                cb(new Error('请输入合法邮箱'))  
            }

        }
        //验证手机号的规则
        var checkMobile=(rule,value,cb)=>{
            //验证手机号的正则表达式
            const reqMobile = /^(?:(?:\+|00)86)?1(?:(?:3[\d])|(?:4[5-79])|(?:5[0-35-9])|(?:6[5-7])|(?:7[0-8])|(?:8[\d])|(?:9[1589]))\d{8}$/
            if(reqMobile.test(value)){
                //数据合法
                return cb()
            }else{
                cb(new Error('请输入合法手机号'))  
            }
        }
        return {
            //获取用户列表的参数对象
            queryInfo:{
                query:'',
                pagenum:1,//当前页数
                pagesize:2
            },
            //用户列表
            userList:[],
            total:0,
            //控制对话框的显示隐藏
            addDialogVisible:false,
            //添加用户表单数据
            addForm:{
                username:'',
                password:'',
                email:'',
                mobile:''
            },
            //分配角色对话框显示与隐藏
            setRoleDialogVisible:false,
            //添加表单验证规则 :rules  prop=
            addFormRules:{
                username:[
                    {
                        required: true,
                        message:'请输入用户名',
                        trigger:'blur'
                    },{
                        min:3,max:10,message:'请用户名长度在3-10之间',
                        trigger:'blur'
                    }
                ],
                password:[
                    {
                        required: true,
                        message:'请输入密码',
                        trigger:'blur'
                    },{
                        min:6,max:15,message:'请用户名长度在6-15之间',
                        trigger:'blur'
                    }
                ],
                email:[
                    {
                        required: true,
                        message:'请输入邮箱',
                        trigger:'blur'
                    },{
                        validator:checkEmail,
                        trigger:'blur'
                    }
                ],
                mobile:[
                    {
                        required: true,
                        message:'请输入手机号',
                        trigger:'blur'
                    },{
                        validator:checkMobile,
                        trigger:'blur'
                    }
                ]
            },
            //修改表单验证规则
            editFormRules:{
                email:[
                    {
                        required: true,
                        message:'请输入邮箱',
                        trigger:'blur'
                    },{
                        validator:checkEmail,
                        trigger:'blur'
                    }
                ],
                mobile:[
                    {
                        required: true,
                        message:'请输入手机号',
                        trigger:'blur'
                    },{
                        validator:checkMobile,
                        trigger:'blur'
                    }
                ]
            },
            //控制修改用户对话框的显示与隐藏
            editDialogVisible:false,
            //查询到的用户信息对象
            editForm:{},
            //需要被分配的用户的信息
            userinfo:{},
            //所有角色的数据列表
            rolesList:[],
            //已选中的角色id
            selectedRoleId:''
        }
    },
    created() {
        this.getUserList()
    },
    methods: {
        async getUserList(){
            const  {data:res}  =   await this.$http.get('users',{ 
                params:this.queryInfo 
            })
            if(res.meta.status != 200){
                this.$message.error('获取用户列表失败')
            }else{
                this.userList = res.data.users
                this.total = res.data.total
            }
            console.log(res)
        },
        //监听每页显示条数改变的事件
        handleSizeChange(newSize){
            this.queryInfo.pagesize = newSize
            this.getUserList()
        },
        //监听页码值改变
        handleCurrentChange(newPage){
            this.queryInfo.pagenum = newPage
            this.getUserList()
        },
        //监听开关状态的改变
        async  userStateChanged(userinfo){
            // console.log(userinfo)
            const {data:res} =await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
            // console.log(res) //meta: {msg: '设置状态成功', status: 200}
            if(res.meta.status != 200){
                userinfo.mg_state = !userinfo.mg_state
                this.$message.error('更新状态失败！')
            }else{
                this.$message.success('更新状态成功！')
            }
        },
        //监听关闭添加用户对话框事件
        addDialogClosed(){
            //取消后重置表单 @close
            this.$refs.addFormRef.resetFields()
        },
        //点击按钮添加用户
        addUser(){
            //表单预验证
            this.$refs.addFormRef.validate( async valid =>{
                // console.log(valid)
                if(!valid){
                    this.$message.error('添加用户失败')
                }else{
                    //可以发起添加用户的网络请求
                    const {data:res}  = await this.$http.post('users',this.addForm)
                    if(res.meta.status != 201){
                            return this.$message.error('添加用户失败')
                    }else{
                        this.$message.success('添加用户成功')
                        this.addDialogVisible = false //隐藏添加用户对话框
                        //重新获取用户列表
                        this.getUserList()
                    }
                }
            })
        },
        //展示编辑用户对话框
        async showEditDialog(id){
            // console.log(id)
            const {data:res}  = await this.$http.get('users/'+id)
            if(res.meta.status != 200){
                return this.$message.error('查询用户信息失败！')
            }
            this.editForm = res.data
            // console.log(this.editForm)
            this.editDialogVisible = true
        },
        //监听修改用户对话框关闭事件
        editDialogClosed(){
            this.$refs.editFormRef.resetFields()
        },
        //修改用户信息并提交 validate预验证函数
        editUserInfo(){
            this.$refs.editFormRef.validate( async valid =>{
                    if(!valid) return
                    //发起修改用户信息的请求
                    const {data:res}  = await this.$http.put('users/'+ this.editForm.id,{
                        email:this.editForm.email,
                        mobile:this.editForm.mobile
                    })
                if(res.meta.status != 200){
                    return this.$message.error('更新用户信息失败')
                }else{
                    this.editDialogVisible = false
                    this.getUserList()
                    this.$message.success('更新用户信息成功')
                }
            })
        },
        //根据id删除用户
         async removeUserById(id){
            //弹框询问是否删除
            const confirmResult =  await this.$confirm('此操作将永久删除该用户, 是否确认?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(() => {
                this.$message({
                    type: 'info',
                    message: '已取消删除'
                });          
            });
            // console.log(confirmResult)
            // 如果点击确认 返回字符串confirm
            if(confirmResult == 'confirm'){
                const {data:res}  =  await this.$http.delete('users/'+ id)
                if(res.meta.status != 200){
                    this.$message.error('删除用户失败')
                }else{
                    this.$message.success('删除用户成功')
                    this.getUserList()
                }   
            }
        },
        //展示分配角色的对话框
        async setRole(userinfo){
            this.userinfo = userinfo
            //在展示对话框之前 获取所有角色列表
                const {data:res}  = await this.$http.get('roles')
                if(res.meta.status != 200){
                    return this.$message.error('获取用户列表失败')
                }else{
                    this.rolesList = res.data
                }
            this.setRoleDialogVisible = true;
        },
        //点击确认保存分配的角色
        async saveRoleInfo(){
            if( !this.selectedRoleId){
                return this.$message.warning('请选择要分配的角色！')
            }else{
                const {data:res}  = await this.$http.put(`users/${this.userinfo.id}/role`,{
                    //选中的角色 id
                    rid:this.selectedRoleId
                })
                if(res.meta.status != 200){
                    this.$message.error('更新角色信息失败！')
                }else{
                    this.$message.success('更新角色信息成功！')
                    this.getUserList()
                    this.setRoleDialogVisible = false
                }
            }
        },
        //分配角色对话框的关闭
        setRoleDialogClosed(){
            this.selectedRoleId = ''
            this.userinfo = {}
        }
            
    },
} 
</script>

<style lang="less" scoped>

</style>